Bunsen-burner.



L. J. STRAUSE & 0. SPAHR.

Patenfied Oct. 26, 1915.

E 5 U I fu a COLUMBIA YLANOGRAI'H (10., WASHINGTON. n. c.

LOUIS J". STRAUSE AND OTTO SPAI-IR, OF PHILADELPHIA. PENNSYLVANIA, ASSIGNORS TO STRAUSE GAS IRON (20., OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

Specification of Letters Patent.

BUNSEN BURNER.

Patented Oct. 26, 1915.

Continuation in part of application Serial No. 811,314, filed January 10, 1914. This application filedlVIay 14,1914. Serial No. 838,461.

To all whom it may concern:

Be it known that we, LoUIs J. S'rnaUsn and ()Tro SPAHR, both citizens of the United States, and residents of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Bunsen Burners, of which the following is a specification.

Qur invention relates to Bunsen burners of the type particularly adapted for use in connection with gas stoves, incandescent'gas lamps, self heating gas irons and the like and has for its object to construct such burners in a manner to protect the customary flexible or other fuel conducting tube from the injurious effects of the heat generated in the element with which said tube is operatively connected.

Our invention will be fully described hereinafter and the features of novelty will be pointed out in the appended claims.

The present application is in part a division of one filed by us in the United States Patent Oflice on January 10, 1914, Serial No. 811,314.

Reference is to be had to the accompanying drawings illustrating certain examples of our invention and in which-- Figures 1, 2 and 3 are longitudinal sections of different forms of our improvement; Figs. 4 and 5 are similar views of two further forms of our improved air hood ;v

Fig. 6 is an end view of Fig.4 and Fig. 7 is a sectional view on the line 7-7 of Fig. 5.

In the form shown in Fig. 1 of the drawings, 10 represents an air hood which may be of any suitable or desired construction and material and as illustrated is externally screw-threaded to accommodate an air regulating shutter 11 of any desired type adapted to cooperate with the usual air inlets 12 for regulating the admission of air to said air hood for admixture with the gaseous fuel in the customary manner. The said airhood 10 is further internally screw-threaded at one end to receive the reduced externally screw-threaded neck 13 of the nipple 14. In this form of our improvement the said nipple 14 is constructed of a materialwhich is a poor conductor or a non-conductor of heat and is provided with a central passage 15 terminating in an enlarged chamber 16 which is internally screw-threaded to receive the screw-threaded neck 17 of the nozzle 18. The latter is thus carried by said nipple and may be made readily accessible, when this is desired for any purpose, by simply unscrewing the nipple 14 from the air-hood 10. The said air-hood 10 may be detachably connected with the burner tube of a gas-stove, gas lamp, gas-iron or the like in any customary manner as by internally screw-threading as indicated at 19 and the one end. of the usual flexible or other tube 20 for supplying the fuel may be slipped over the said nipple 14 for instance as clearly shownin Fig. 1. In this form the air-hood 10 and connected parts as well as the nozzle 18 may be constructed of metal, while, asabove stated the nipple 14 is made of a material'which is a poor conductor or a non-conductor of heat. With ordinary constructions the heat from the burner is conducted along the various metallic tubes orother parts included in the device and by coming" into contact with the said fuel tube 20, which is usually constructed of rubber or a combination of rubber and some other.

substance, vulcanizes the said tube upon the nipple and thus prevents its removal therefrom without fracturing or otherwise in j uring the said tube, and in structures where the fuel supply tube is attached in a manner other than by slipping over a nipple is conducted to said tube and injures or destroys the same. .The life of the tube in such constructions is in consequence materially reduced and the same is ofttimes rendered leaky and dangerous to use. In the present construction so far .described the above objections are absolutely overcome and the said tube is effectively insulated against the ef fects of said heat by the nipple 14 of insulating material which arrests conduction of heat and prevents the same from injuring the tube 20. 7

As shown in Fig. 2 of the drawings the arrangement is reversed as it were, the airhood 10 in this form being constructed of a material which is a poor conductor or a non-conductor of heat, while the nipple 14 may be made of metal. In this form the medium for connecting the fuel supply tube with the air hood may be other than av nipple. Otherwise this second form may be constructed and operated the same as the form first described. the difference being that in said second form the air-hood acts as a medium for arrestingthe conduction of heat before-the tube 20 is reached.

,111 the form illustrated in Fig. 3 the airhood and nipple'l l areboth constructed of a material which is a poor conductor or a non-conductor of heat, while the nozzle 18' as in the previous forms may be of metal or other suitable material. .7 With. this last ar '7 ing the tube 20.

rangement, which otherwise may be the same and operate the same as the two forms previously described, both the air-hood and nipple serve to prevent the heat from reach- In Figs 3, .4: and G the air-hood 10 and 10 of non-conducting material may bereinforced at one end Witha metallic internallyv screw-threaded ring 21 suitably secured in position and adapted to reeeive the reduced screw-threaded neck of either of the nipples l4, 14c or 1 1.

ln Fi'gsf5 and 7 the air-hood 10 is also constructed, of a non-conducting material and is inclosed in a metallic protecting sleeve or shell 22, said air-hoodf10 also being adapted for connection with either of the iiirmle'sil, 14: or 14*,- the said protecting sleeve being also illustrated in connec- 'tion with the air-hood 10 of Fig. 3.

In-the two last forms, as in Figs. 2 and 3 therair-hood insulatesthe tube 20 against the effectsof the heat 7 generated by .the burner, as will be readily apparent, It will of course .be understood that, the air-hoods .10", 10 and 10 may be provided with suit- 35 V fects of heat generatedat the burner and ,conducted away therefromby metallic or otherparts of the. device with which the tube is connected. v

It will of course be understoodthat in all forms of our'invention the heat insulating means may be constructed of any material suitable for the intended purposes, although a substantially rigid. fibrous material such as asbestos,wood or similar substances is preferred, and also that said means may be combined or included n Bunsen burners or the like of dilierent constructions from those shown.

Various changes .in the specific forms shown and described may be made within the scope of the claims without departing from the.spirit of our invention.

' l/Ve claim 1. A Bunsen burner of the kind described comprising an air hood, a nipple having its inner end detachably secured in an end of said air hood, one of said elements being constructed of heat insulating material and a nozzle carried by the inner end of said nipple and located within said air hood.

2. A Bunsen burner-of the kind described comprising an air hood, a nipple of heat insulating material having its inner end screwed into an end of said air hood and a nozzle carried by the inner end of said nipple and located within said air hood.

3. A Bunsen burner of the kind described comprising an air hood of heat insulating material, a nipple having its inner end screwed into an end of said air hood and a nozzle carried by the inner end of said nipple and located within said air hood.

A A Bunsen burner of the kind described comprising an air hood of heat insulating material, a nipple of heat insulating material having its inner end screwed into an end of the said air hood and a metallic nozzle detachably secured to the inner end of said nipple and located within said air hood.

5. A Bunsen burner of the kind described comprising an air hood of heat insulating material, a metallic reinforcing sleeve surrounding said air hood, an internally screwthreaded metallic ring secured withinan end of said air hood, a nipple having a reduced end adapted to screw into said metallic ring and a nozzle projecting from the reduced end of said nipple and located within said air hood.

7 In testimony whereof, we have hereunto set our hands in the presence of two subscribing witnesses.

LOUIS J. STRAUSE. OTTO SPAHR.

Witnesses:

JQHN A. KEHLENBEGK, FRED A. KLE N.

Copies of this patent may be obtained forfive cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

